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High-speed wire rod production method and production line thereof

A high-speed wire rod and production method technology, applied in the field of metallurgy, can solve the problems of uncontrollable rolling stock temperature, single pass design, no-load power consumption and high-altitude passing rack, etc., so as to reduce the temperature difference between the core surface of the rolling stock and improve product quality. , the effect of saving power consumption

Inactive Publication Date: 2017-12-01
CISDI ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1) 10 stands or 8 stands are arranged continuously in the finishing rolling mill, and the temperature rise of the rolled piece after being rolled by the finishing rolling mill can reach 100-150°C, and the temperature of the rolled piece cannot be controlled;
[0007] 2) When rolling larger-sized wire rod products, the finishing rolling unit needs to be rolled by the frame, and the empty frame must also run at high speed at this time, and the no-load power consumption is high and causes unnecessary power consumption of the empty frame;
[0008] 3) The 10-stand or 8-stand of the finishing rolling unit adopts a fixed speed ratio and a single pass design

Method used

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  • High-speed wire rod production method and production line thereof
  • High-speed wire rod production method and production line thereof
  • High-speed wire rod production method and production line thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] figure 1 It is a schematic layout diagram of an ordinary high-speed wire rod production line, which includes a rough rolling unit 1, an intermediate rolling unit 3, a pre-finishing rolling unit 5, a cooling unit Ⅰ6, a finishing rolling unit 8 and a cooling unit Ⅱ9 arranged in sequence along the rolling production direction. The production line completes the steps of rough rolling, intermediate rolling, pre-finish rolling, cooling after pre-finish rolling, finish rolling, silk spinning, air cooling and coil collection in sequence.

[0037] Specifically, the rough rolling unit 1 and the intermediate rolling unit 3 in this embodiment are both composed of 6 horizontal and vertical alternately arranged rolling mills or flat roll mills. The steel billet is subjected to 6 passes of rough rolling and 6 passes of intermediate rolling, and the rolling method adopts non-slot rolling or pass rolling; when rolling, there are guides at the front and rear of each rolling mill, and the...

Embodiment 2

[0042] figure 2 It is a schematic layout diagram of high-quality high-speed wire rod production line, which includes rough rolling unit 1, intermediate rolling unit 3, pre-finishing rolling unit 5, cooling unit Ⅰ6, finishing rolling unit 8, cooling unit Ⅱ9, The sizing unit 10 and the cooling device III11 are used to complete rough rolling, intermediate rolling, pre-finish rolling, cooling after pre-finish rolling, finish rolling, finish rolling controlled cooling, reducing sizing, reducing sizing controlled cooling, spinning , air cooling and volume collection and other steps.

[0043] Specifically, the rough rolling unit 1 and the intermediate rolling unit 3 in this embodiment are both composed of 6 horizontal and vertical alternately arranged rolling mills or flat roll mills. The steel billet is subjected to 6 passes of rough rolling and 6 passes of intermediate rolling, and the rolling method adopts non-slot rolling or pass rolling; when rolling, there are guides at the f...

Embodiment 3

[0050] figure 1 It is a schematic layout diagram of an ordinary high-speed wire rod production line, which includes a rough rolling unit 1, an intermediate rolling unit 3, a pre-finishing rolling unit 5, a cooling unit Ⅰ6, a finishing rolling unit 8 and a cooling unit Ⅱ9 arranged in sequence along the rolling production direction. The production line completes the steps of rough rolling, intermediate rolling, pre-finish rolling, cooling after pre-finish rolling, finish rolling, silk spinning, air cooling and coil collection in sequence.

[0051] Specifically, the rough rolling unit 1 and the intermediate rolling unit 3 in this embodiment are both composed of 6 horizontal and vertical alternately arranged rolling mills or flat roll mills. The steel billet is subjected to 6 passes of rough rolling and 6 passes of intermediate rolling, and the rolling method adopts non-slot rolling or pass rolling; when rolling, there are guides at the front and rear of each rolling mill, and the...

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Abstract

The invention belongs to wire rod rolling technologies, and particularly discloses a high-speed wire rod production method and a production line thereof. Finishing mill groups and reducing-sizing mills are arranged to be independent transmission units, and the temperature between the finishing mill groups as well as between the reducing-sizing mills can be accurately controlled. Cooling devices and restoration sections are arranged between the finishing mill groups as well as between the reducing-sizing mills, the rolled piece core-surface temperature difference is effectively reduced, and the temperature rising problem of high-speed wire rod finishing mills is solved. By controlling the cooling process of the finishing mill groups and the reducing-sizing mills, cooling parameters can be adjusted, and therefore the wire rod head-tail temperature difference is reduced and the wire rod homogeneity is improved. Compared with the prior art, product quality is improved obviously and production cost is effectively reduced.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to a high-speed wire rod production method and a production line thereof. Background technique [0002] As one of the important products in the iron and steel industry, wire rod is widely used in construction, machinery and metal products industries. In recent years, the output has continued to increase, reaching 142.188 million tons in 2016, accounting for 12.49% of China's total steel. [0003] As we all know, in modern high-speed wire rod production, higher output is usually obtained by increasing the wire rod finishing speed. At present, the guaranteed final rolling speed of high-speed wire rod production can reach 115m / s, or even higher. In order to achieve such a high rolling speed, a wire rod mill suitable for high-speed and stable rolling is required. At present, the centralized drive wire rod finishing mill is generally used, and the products that meet the size requi...

Claims

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Application Information

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IPC IPC(8): B21B1/18B21B45/02B21B37/76
CPCB21B1/18B21B37/76B21B45/0209
Inventor 周民陈莹卷马靳江
Owner CISDI ENG CO LTD